20493572 has 24 divisors (see below), whose sum is σ = 39372480. Its totient is φ = 9256160.

The previous prime is 20493553. The next prime is 20493581. The reversal of 20493572 is 27539402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5954 + ... + 8742.

It is an arithmetic number, because the mean of its divisors is an integer number (1640520).

Almost surely, 2^20493572 is an apocalyptic number.

20493572 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20493572 is a deficient number, since it is larger than the sum of its proper divisors (18878908).

20493572 is a wasteful number, since it uses less digits than its factorization.

20493572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971 (or 2969 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 20493572 is about 4526.9826595648. The cubic root of 20493572 is about 273.6565750851.

The spelling of 20493572 in words is "twenty million, four hundred ninety-three thousand, five hundred seventy-two".