70028491 has 24 divisors (see below), whose sum is σ = 83613600. Its totient is φ = 58096896.

The previous prime is 70028479. The next prime is 70028503. The reversal of 70028491 is 19482007.

It is an interprime number because it is at equal distance from previous prime (70028479) and next prime (70028503).

It is not a de Polignac number, because 70028491 - 2⁵ = 70028459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70028401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116610 + ... + 117208.

It is an arithmetic number, because the mean of its divisors is an integer number (3483900).

Almost surely, 2^70028491 is an apocalyptic number.

70028491 is a deficient number, since it is larger than the sum of its proper divisors (13585109).

70028491 is a wasteful number, since it uses less digits than its factorization.

70028491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 70028491 is about 8368.3027550394. The cubic root of 70028491 is about 412.1844364630.

The spelling of 70028491 in words is "seventy million, twenty-eight thousand, four hundred ninety-one".