20628954 has 48 divisors (see below), whose sum is σ = 46051200. Its totient is φ = 6671808.

The previous prime is 20628929. The next prime is 20628977. The reversal of 20628954 is 45982602.

It is a happy number.

20628954 is a `hidden beast` number, since 20 + 628 + 9 + 5 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126477 + ... + 126639.

It is an arithmetic number, because the mean of its divisors is an integer number (959400).

Almost surely, 2^20628954 is an apocalyptic number.

20628954 is an abundant number, since it is smaller than the sum of its proper divisors (25422246).

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

20628954 is a wasteful number, since it uses less digits than its factorization.

20628954 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 20628954 is about 4541.9108313572. The cubic root of 20628954 is about 274.2578512898.

The spelling of 20628954 in words is "twenty million, six hundred twenty-eight thousand, nine hundred fifty-four".