11937890 has 32 divisors (see below), whose sum is σ = 22921920. Its totient is φ = 4463424.

The previous prime is 11937881. The next prime is 11937917. The reversal of 11937890 is 9873911.

11937890 = T₁₃₅ + T₁₃₆ + ... + T₄₁₉.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15392 + ... + 16148.

It is an arithmetic number, because the mean of its divisors is an integer number (716310).

Almost surely, 2^11937890 is an apocalyptic number.

11937890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11937890 is a deficient number, since it is larger than the sum of its proper divisors (10984030).

11937890 is a wasteful number, since it uses less digits than its factorization.

11937890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 11937890 is about 3455.1251786296. The cubic root of 11937890 is about 228.5471750679.

The spelling of 11937890 in words is "eleven million, nine hundred thirty-seven thousand, eight hundred ninety".