49972720 has 40 divisors (see below), whose sum is σ = 132786144. Its totient is φ = 17133312.

The previous prime is 49972709. The next prime is 49972729. The reversal of 49972720 is 2727994.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49972729) 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, 44059 + ... + 45178.

Almost surely, 2^49972720 is an apocalyptic number.

49972720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

49972720 is an abundant number, since it is smaller than the sum of its proper divisors (82813424).

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

49972720 is a wasteful number, since it uses less digits than its factorization.

49972720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89257 (or 89251 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 49972720 is about 7069.1385613807. The cubic root of 49972720 is about 368.3361374224.

The spelling of 49972720 in words is "forty-nine million, nine hundred seventy-two thousand, seven hundred twenty".