45339280 has 40 divisors (see below), whose sum is σ = 120474432. Its totient is φ = 15544704.

The previous prime is 45339277. The next prime is 45339299. The reversal of 45339280 is 8293354.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39922 + ... + 41041.

Almost surely, 2^45339280 is an apocalyptic number.

45339280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

45339280 is an abundant number, since it is smaller than the sum of its proper divisors (75135152).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

45339280 is a wasteful number, since it uses less digits than its factorization.

45339280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80983 (or 80977 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 45339280 is about 6733.4448835644. Note that the first 3 decimals coincide. The cubic root of 45339280 is about 356.5810063986.

The spelling of 45339280 in words is "forty-five million, three hundred thirty-nine thousand, two hundred eighty".