21960274 has 16 divisors (see below), whose sum is σ = 37867968. Its totient is φ = 9356112.

The previous prime is 21960271. The next prime is 21960287. The reversal of 21960274 is 47206912.

It is not an unprimeable number, because it can be changed into a prime (21960271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2112 + ... + 6955.

It is an arithmetic number, because the mean of its divisors is an integer number (2366748).

Almost surely, 2^21960274 is an apocalyptic number.

21960274 is a deficient number, since it is larger than the sum of its proper divisors (15907694).

21960274 is a wasteful number, since it uses less digits than its factorization.

21960274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 21960274 is about 4686.1790405404. The cubic root of 21960274 is about 280.0351741526.

The spelling of 21960274 in words is "twenty-one million, nine hundred sixty thousand, two hundred seventy-four".