74138190 has 128 divisors (see below), whose sum is σ = 226851840. Its totient is φ = 15095808.

The previous prime is 74138189. The next prime is 74138201. The reversal of 74138190 is 9183147.

It is a super-2 number, since 2×74138190² = 10992942432952200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67284 + ... + 68376.

It is an arithmetic number, because the mean of its divisors is an integer number (1772280).

Almost surely, 2^74138190 is an apocalyptic number.

74138190 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 74138190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113425920).

74138190 is an abundant number, since it is smaller than the sum of its proper divisors (152713650).

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

74138190 is a wasteful number, since it uses less digits than its factorization.

74138190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 74138190 is about 8610.3536512736. The cubic root of 74138190 is about 420.0948198615.

The spelling of 74138190 in words is "seventy-four million, one hundred thirty-eight thousand, one hundred ninety".