19791402 has 16 divisors (see below), whose sum is σ = 39749952. Its totient is φ = 6569280.

The previous prime is 19791391. The next prime is 19791413. The reversal of 19791402 is 20419791.

It is an interprime number because it is at equal distance from previous prime (19791391) and next prime (19791413).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5398 + ... + 8289.

It is an arithmetic number, because the mean of its divisors is an integer number (2484372).

Almost surely, 2^19791402 is an apocalyptic number.

19791402 is an abundant number, since it is smaller than the sum of its proper divisors (19958550).

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

19791402 is a wasteful number, since it uses less digits than its factorization.

19791402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13933.

The product of its (nonzero) digits is 4536, while the sum is 33.

The square root of 19791402 is about 4448.7528589482. The cubic root of 19791402 is about 270.4947581278.

The spelling of 19791402 in words is "nineteen million, seven hundred ninety-one thousand, four hundred two".