146728406 has 8 divisors (see below), whose sum is σ = 240101064. Its totient is φ = 66694720.

The previous prime is 146728399. The next prime is 146728409. The reversal of 146728406 is 604827641.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 146728406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (146728409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3334715 + ... + 3334758.

It is an arithmetic number, because the mean of its divisors is an integer number (30012633).

Almost surely, 2^146728406 is an apocalyptic number.

146728406 is a deficient number, since it is larger than the sum of its proper divisors (93372658).

146728406 is a wasteful number, since it uses less digits than its factorization.

146728406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6669486.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 146728406 is about 12113.1501270314. The cubic root of 146728406 is about 527.4379804746.

The spelling of 146728406 in words is "one hundred forty-six million, seven hundred twenty-eight thousand, four hundred six".