20277248 has 24 divisors (see below), whose sum is σ = 40548690. Its totient is φ = 10137600.

The previous prime is 20277239. The next prime is 20277251. The reversal of 20277248 is 84277202.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12166144 + 8111104 = 3488^2 + 2848^2 .

It is a super-2 number, since 2×20277248² = 822333572907008, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2903 + ... + 6998.

Almost surely, 2^20277248 is an apocalyptic number.

It is an amenable number.

20277248 is a deficient number, since it is larger than the sum of its proper divisors (20271442).

20277248 is an frugal number, since it uses more digits than its factorization.

20277248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9923 (or 9903 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 20277248 is about 4503.0265377854. The cubic root of 20277248 is about 272.6902882103.

The spelling of 20277248 in words is "twenty million, two hundred seventy-seven thousand, two hundred forty-eight".