70451780 has 24 divisors (see below), whose sum is σ = 169084608. Its totient is φ = 24154848.

The previous prime is 70451741. The next prime is 70451803. The reversal of 70451780 is 8715407.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251474 + ... + 251753.

It is an arithmetic number, because the mean of its divisors is an integer number (7045192).

Almost surely, 2^70451780 is an apocalyptic number.

70451780 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

70451780 is an abundant number, since it is smaller than the sum of its proper divisors (98632828).

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

70451780 is a wasteful number, since it uses less digits than its factorization.

70451780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503243 (or 503241 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 70451780 is about 8393.5558614928. Note that the first 3 decimals coincide. The cubic root of 70451780 is about 413.0132552072.

The spelling of 70451780 in words is "seventy million, four hundred fifty-one thousand, seven hundred eighty".