70390628 has 48 divisors (see below), whose sum is σ = 154224000. Its totient is φ = 27310080.

The previous prime is 70390609. The next prime is 70390633. The reversal of 70390628 is 82609307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138038 + ... + 138546.

It is an arithmetic number, because the mean of its divisors is an integer number (3213000).

Almost surely, 2^70390628 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70390628, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77112000).

70390628 is an abundant number, since it is smaller than the sum of its proper divisors (83833372).

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

70390628 is a wasteful number, since it uses less digits than its factorization.

70390628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980 (or 978 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 70390628 is about 8389.9122760611. The cubic root of 70390628 is about 412.8937223974.

The spelling of 70390628 in words is "seventy million, three hundred ninety thousand, six hundred twenty-eight".