11861490 has 16 divisors (see below), whose sum is σ = 28467648. Its totient is φ = 3163056.

The previous prime is 11861467. The next prime is 11861527. The reversal of 11861490 is 9416811.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 395383 = 11861490 / (1 + 1 + 8 + 6 + 1 + 4 + 9 + 0).

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, 197662 + ... + 197721.

It is an arithmetic number, because the mean of its divisors is an integer number (1779228).

Almost surely, 2^11861490 is an apocalyptic number.

11861490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11861490 is an abundant number, since it is smaller than the sum of its proper divisors (16606158).

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

11861490 is a wasteful number, since it uses less digits than its factorization.

11861490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395393.

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 11861490 is about 3444.0513933448. The cubic root of 11861490 is about 228.0585799001.

The spelling of 11861490 in words is "eleven million, eight hundred sixty-one thousand, four hundred ninety".