20627974 has 4 divisors (see below), whose sum is σ = 30941964. Its totient is φ = 10313986.

The previous prime is 20627963. The next prime is 20627983. The reversal of 20627974 is 47972602.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×20627974² = 851026622689352, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5156992 + ... + 5156995.

It is an arithmetic number, because the mean of its divisors is an integer number (7735491).

Almost surely, 2^20627974 is an apocalyptic number.

20627974 is a deficient number, since it is larger than the sum of its proper divisors (10313990).

20627974 is a wasteful number, since it uses less digits than its factorization.

20627974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10313989.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 20627974 is about 4541.8029459676. The cubic root of 20627974 is about 274.2535082525.

The spelling of 20627974 in words is "twenty million, six hundred twenty-seven thousand, nine hundred seventy-four".