11902638 has 32 divisors (see below), whose sum is σ = 27101952. Its totient is φ = 3449600.

The previous prime is 11902637. The next prime is 11902643. The reversal of 11902638 is 83620911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11902633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2403 + ... + 5438.

It is an arithmetic number, because the mean of its divisors is an integer number (846936).

Almost surely, 2^11902638 is an apocalyptic number.

11902638 is an abundant number, since it is smaller than the sum of its proper divisors (15199314).

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

11902638 is a wasteful number, since it uses less digits than its factorization.

11902638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7880.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 11902638 is about 3450.0199999420. The cubic root of 11902638 is about 228.3219904264.

It can be divided in two parts, 1190 and 2638, that added together give a triangular number (3828 = T₈₇).

The spelling of 11902638 in words is "eleven million, nine hundred two thousand, six hundred thirty-eight".