45402012 has 48 divisors (see below), whose sum is σ = 118137600. Its totient is φ = 15078960.

The previous prime is 45401989. The next prime is 45402017. The reversal of 45402012 is 21020454.

It is a super-2 number, since 2×45402012² = 4122685387296288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45402017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38187 + ... + 39357.

It is an arithmetic number, because the mean of its divisors is an integer number (2461200).

Almost surely, 2^45402012 is an apocalyptic number.

It is an amenable number.

45402012 is an abundant number, since it is smaller than the sum of its proper divisors (72735588).

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

45402012 is a wasteful number, since it uses less digits than its factorization.

45402012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1543 (or 1535 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 45402012 is about 6738.1015130376. The cubic root of 45402012 is about 356.7453872689.

Adding to 45402012 its reverse (21020454), we get a palindrome (66422466).

The spelling of 45402012 in words is "forty-five million, four hundred two thousand, twelve".