74700144 has 60 divisors (see below), whose sum is σ = 216810776. Its totient is φ = 24898752.

The previous prime is 74700139. The next prime is 74700149. The reversal of 74700144 is 44100747.

It is an interprime number because it is at equal distance from previous prime (74700139) and next prime (74700149).

It is a super-2 number, since 2×74700144² = 11160223027241472, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74700149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5719 + ... + 13494.

Almost surely, 2^74700144 is an apocalyptic number.

It is an amenable number.

74700144 is an abundant number, since it is smaller than the sum of its proper divisors (142110632).

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

74700144 is a wasteful number, since it uses less digits than its factorization.

74700144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19236 (or 19218 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 74700144 is about 8642.9245050504. The cubic root of 74700144 is about 421.1535634393.

74700144 divided by its sum of digits (27) gives a palindrome (2766672).

The spelling of 74700144 in words is "seventy-four million, seven hundred thousand, one hundred forty-four".