11920554 has 32 divisors (see below), whose sum is σ = 27348480. Its totient is φ = 3844800.

The previous prime is 11920541. The next prime is 11920561. The reversal of 11920554 is 45502911.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1887 + ... + 5234.

It is an arithmetic number, because the mean of its divisors is an integer number (854640).

Almost surely, 2^11920554 is an apocalyptic number.

11920554 is an abundant number, since it is smaller than the sum of its proper divisors (15427926).

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

11920554 is a wasteful number, since it uses less digits than its factorization.

11920554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7163 (or 7157 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 11920554 is about 3452.6155302900. The cubic root of 11920554 is about 228.4364907044.

The spelling of 11920554 in words is "eleven million, nine hundred twenty thousand, five hundred fifty-four".