19956130 has 16 divisors (see below), whose sum is σ = 38034360. Its totient is φ = 7512832.

The previous prime is 19956119. The next prime is 19956133. The reversal of 19956130 is 3165991.

It can be written as a sum of positive squares in 4 ways, for example, as 18071001 + 1885129 = 4251^2 + 1373^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (19956133) 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, 58525 + ... + 58864.

Almost surely, 2^19956130 is an apocalyptic number.

19956130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19956130 is a deficient number, since it is larger than the sum of its proper divisors (18078230).

19956130 is a wasteful number, since it uses less digits than its factorization.

19956130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117413.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 19956130 is about 4467.2284472590. The cubic root of 19956130 is about 271.2431472003.

The spelling of 19956130 in words is "nineteen million, nine hundred fifty-six thousand, one hundred thirty".