49172928 has 56 divisors (see below), whose sum is σ = 148693632. Its totient is φ = 14049024.

The previous prime is 49172927. The next prime is 49172947. The reversal of 49172928 is 82927194.

It is a tau number, because it is divible by the number of its divisors (56).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 49172928.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49172927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16950 + ... + 19637.

Almost surely, 2^49172928 is an apocalyptic number.

49172928 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

49172928 is an abundant number, since it is smaller than the sum of its proper divisors (99520704).

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

49172928 is a wasteful number, since it uses less digits than its factorization.

49172928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36609 (or 36599 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 49172928 is about 7012.3411211948. The cubic root of 49172928 is about 366.3605393453.

The spelling of 49172928 in words is "forty-nine million, one hundred seventy-two thousand, nine hundred twenty-eight".