75574420 has 24 divisors (see below), whose sum is σ = 158904648. Its totient is φ = 30192000.

The previous prime is 75574417. The next prime is 75574423. The reversal of 75574420 is 2447557.

It is an interprime number because it is at equal distance from previous prime (75574417) and next prime (75574423).

It can be written as a sum of positive squares in 4 ways, for example, as 7214596 + 68359824 = 2686^2 + 8268^2 .

It is a super-2 number, since 2×75574420² = 11422985916672800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75574423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18570 + ... + 22270.

It is an arithmetic number, because the mean of its divisors is an integer number (6621027).

Almost surely, 2^75574420 is an apocalyptic number.

It is an amenable number.

75574420 is an abundant number, since it is smaller than the sum of its proper divisors (83330228).

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

75574420 is a wasteful number, since it uses less digits than its factorization.

75574420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731 (or 4729 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 75574420 is about 8693.3549335110. The cubic root of 75574420 is about 422.7902280939.

The spelling of 75574420 in words is "seventy-five million, five hundred seventy-four thousand, four hundred twenty".