45388030 has 24 divisors (see below), whose sum is σ = 84436776. Its totient is φ = 17565840.

The previous prime is 45388019. The next prime is 45388037. The reversal of 45388030 is 3088354.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 45387983 and 45388001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45388037) 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, 7249 + ... + 11971.

It is an arithmetic number, because the mean of its divisors is an integer number (3518199).

Almost surely, 2^45388030 is an apocalyptic number.

45388030 is a deficient number, since it is larger than the sum of its proper divisors (39048746).

45388030 is a wasteful number, since it uses less digits than its factorization.

45388030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4792 (or 4761 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 45388030 is about 6737.0639005430. The cubic root of 45388030 is about 356.7087624153.

The spelling of 45388030 in words is "forty-five million, three hundred eighty-eight thousand, thirty".