69628431 has 8 divisors (see below), whose sum is σ = 93705984. Its totient is φ = 45984920.

The previous prime is 69628423. The next prime is 69628457. The reversal of 69628431 is 13482696.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69628431 - 2³ = 69628423 is a prime.

It is a super-2 number, since 2×69628431² = 9696236807043522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 69628431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69628421) 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, 108135 + ... + 108776.

It is an arithmetic number, because the mean of its divisors is an integer number (11713248).

Almost surely, 2^69628431 is an apocalyptic number.

69628431 is a deficient number, since it is larger than the sum of its proper divisors (24077553).

69628431 is a wasteful number, since it uses less digits than its factorization.

69628431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217021.

The product of its digits is 62208, while the sum is 39.

The square root of 69628431 is about 8344.3652245093. The cubic root of 69628431 is about 411.3980255066.

The spelling of 69628431 in words is "sixty-nine million, six hundred twenty-eight thousand, four hundred thirty-one".