21862704 has 20 divisors (see below), whose sum is σ = 56478776. Its totient is φ = 7287552.

The previous prime is 21862699. The next prime is 21862739. The reversal of 21862704 is 40726812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227689 + ... + 227784.

Almost surely, 2^21862704 is an apocalyptic number.

21862704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21862704 is an abundant number, since it is smaller than the sum of its proper divisors (34616072).

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

21862704 is a wasteful number, since it uses less digits than its factorization.

21862704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455484 (or 455478 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 21862704 is about 4675.7570510025. The cubic root of 21862704 is about 279.6198241781.

The spelling of 21862704 in words is "twenty-one million, eight hundred sixty-two thousand, seven hundred four".