70906428 has 36 divisors (see below), whose sum is σ = 185876600. Its totient is φ = 23635152.

The previous prime is 70906427. The next prime is 70906457. The reversal of 70906428 is 82460907.

70906428 is a `hidden beast` number, since 7 + 0 + 9 + 0 + 642 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 70906392 and 70906401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70906427) 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, 35503 + ... + 37446.

Almost surely, 2^70906428 is an apocalyptic number.

It is an amenable number.

70906428 is an abundant number, since it is smaller than the sum of its proper divisors (114970172).

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

70906428 is a wasteful number, since it uses less digits than its factorization.

70906428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72968 (or 72954 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 70906428 is about 8420.5954658801. The cubic root of 70906428 is about 413.8997867083.

The spelling of 70906428 in words is "seventy million, nine hundred six thousand, four hundred twenty-eight".