69420400 has 60 divisors (see below), whose sum is σ = 190616272. Its totient is φ = 23800320.

The previous prime is 69420391. The next prime is 69420409. The reversal of 69420400 is 402496.

It is an interprime number because it is at equal distance from previous prime (69420391) and next prime (69420409).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69420409) 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, 9597 + ... + 15196.

Almost surely, 2^69420400 is an apocalyptic number.

It is an amenable number.

69420400 is an abundant number, since it is smaller than the sum of its proper divisors (121195872).

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

69420400 is a wasteful number, since it uses less digits than its factorization.

69420400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24818 (or 24807 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 69420400 is about 8331.8905417678. The cubic root of 69420400 is about 410.9879012862.

Adding to 69420400 its reverse (402496), we get a palindrome (69822896).

The spelling of 69420400 in words is "sixty-nine million, four hundred twenty thousand, four hundred".