15040213 has 4 divisors (see below), whose sum is σ = 15189228. Its totient is φ = 14891200.

The previous prime is 15040211. The next prime is 15040219. The reversal of 15040213 is 31204051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31204051 = 101 ⋅308951.

It can be written as a sum of positive squares in 2 ways, for example, as 10125124 + 4915089 = 3182^2 + 2217^2 .

It is a cyclic number.

It is not a de Polignac number, because 15040213 - 2¹ = 15040211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15040211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74356 + ... + 74557.

It is an arithmetic number, because the mean of its divisors is an integer number (3797307).

Almost surely, 2^15040213 is an apocalyptic number.

It is an amenable number.

15040213 is a deficient number, since it is larger than the sum of its proper divisors (149015).

15040213 is a wasteful number, since it uses less digits than its factorization.

15040213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149014.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 15040213 is about 3878.1713474265. The cubic root of 15040213 is about 246.8413969753.

Adding to 15040213 its reverse (31204051), we get a palindrome (46244264).

The spelling of 15040213 in words is "fifteen million, forty thousand, two hundred thirteen".