45971388 has 120 divisors (see below), whose sum is σ = 130099200. Its totient is φ = 14113440.

The previous prime is 45971287. The next prime is 45971399. The reversal of 45971388 is 88317954.

It is a super-2 number, since 2×45971388² = 4226737029293088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 230913 + ... + 231111.

It is an arithmetic number, because the mean of its divisors is an integer number (1084160).

Almost surely, 2^45971388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45971388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65049600).

45971388 is an abundant number, since it is smaller than the sum of its proper divisors (84127812).

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

45971388 is a wasteful number, since it uses less digits than its factorization.

45971388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 258 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 45971388 is about 6780.2203504016. The cubic root of 45971388 is about 358.2304831679.

The spelling of 45971388 in words is "forty-five million, nine hundred seventy-one thousand, three hundred eighty-eight".