70479780 has 48 divisors (see below), whose sum is σ = 225536640. Its totient is φ = 16109568.

The previous prime is 70479763. The next prime is 70479791. The reversal of 70479780 is 8797407.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 83485 + ... + 84324.

It is an arithmetic number, because the mean of its divisors is an integer number (4698680).

Almost surely, 2^70479780 is an apocalyptic number.

70479780 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70479780 is an abundant number, since it is smaller than the sum of its proper divisors (155056860).

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

70479780 is a wasteful number, since it uses less digits than its factorization.

70479780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167828 (or 167826 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 42.

The square root of 70479780 is about 8395.2236420479. The cubic root of 70479780 is about 413.0679632617.

The spelling of 70479780 in words is "seventy million, four hundred seventy-nine thousand, seven hundred eighty".