52728990 has 32 divisors (see below), whose sum is σ = 133211520. Its totient is φ = 13320864.

The previous prime is 52728983. The next prime is 52728997. The reversal of 52728990 is 9982725.

It is an interprime number because it is at equal distance from previous prime (52728983) and next prime (52728997).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52728997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45684 + ... + 46823.

It is an arithmetic number, because the mean of its divisors is an integer number (4162860).

Almost surely, 2^52728990 is an apocalyptic number.

52728990 is an abundant number, since it is smaller than the sum of its proper divisors (80482530).

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

52728990 is a wasteful number, since it uses less digits than its factorization.

52728990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92536.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 52728990 is about 7261.4729910673. The cubic root of 52728990 is about 374.9872351210.

The spelling of 52728990 in words is "fifty-two million, seven hundred twenty-eight thousand, nine hundred ninety".