70400286 has 64 divisors (see below), whose sum is σ = 178122240. Its totient is φ = 20401920.

The previous prime is 70400269. The next prime is 70400293. The reversal of 70400286 is 68200407.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11086 + ... + 16238.

It is an arithmetic number, because the mean of its divisors is an integer number (2783160).

Almost surely, 2^70400286 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70400286, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89061120).

70400286 is an abundant number, since it is smaller than the sum of its proper divisors (107721954).

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

70400286 is a wasteful number, since it uses less digits than its factorization.

70400286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5198 (or 5192 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 70400286 is about 8390.4878284877. The cubic root of 70400286 is about 412.9126053335.

The spelling of 70400286 in words is "seventy million, four hundred thousand, two hundred eighty-six".