45978012 has 36 divisors (see below), whose sum is σ = 121277520. Its totient is φ = 14659392.

The previous prime is 45978011. The next prime is 45978017. The reversal of 45978012 is 21087954.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×45978012² = 4227955174944288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45978011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26937 + ... + 28592.

It is an arithmetic number, because the mean of its divisors is an integer number (3368820).

Almost surely, 2^45978012 is an apocalyptic number.

It is an amenable number.

45978012 is an abundant number, since it is smaller than the sum of its proper divisors (75299508).

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

45978012 is a wasteful number, since it uses less digits than its factorization.

45978012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55562 (or 55557 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 45978012 is about 6780.7088125063. The cubic root of 45978012 is about 358.2476881068.

The spelling of 45978012 in words is "forty-five million, nine hundred seventy-eight thousand, twelve".