20954130 has 16 divisors (see below), whose sum is σ = 50289984. Its totient is φ = 5587760.

The previous prime is 20954113. The next prime is 20954137. The reversal of 20954130 is 3145902.

It is a self number, because there is not a number n which added to its sum of digits gives 20954130.

It is not an unprimeable number, because it can be changed into a prime (20954137) 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, 349206 + ... + 349265.

It is an arithmetic number, because the mean of its divisors is an integer number (3143124).

Almost surely, 2^20954130 is an apocalyptic number.

20954130 is an abundant number, since it is smaller than the sum of its proper divisors (29335854).

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

20954130 is a wasteful number, since it uses less digits than its factorization.

20954130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 698481.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 20954130 is about 4577.5681316612. The cubic root of 20954130 is about 275.6913952480.

The spelling of 20954130 in words is "twenty million, nine hundred fifty-four thousand, one hundred thirty".