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70020923 = 754718287
BaseRepresentation
bin1000010110001…
…10111100111011
311212202102122112
410023012330323
5120411132143
610540442535
71510111430
oct413067473
9155672575
1070020923
1136585835
121b54944b
13116781cb
149429b87
156231e18
hex42c6f3b

70020923 has 8 divisors (see below), whose sum is σ = 80174592. Its totient is φ = 59904936.

The previous prime is 70020919. The next prime is 70020931. The reversal of 70020923 is 32902007.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70020923 - 22 = 70020919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70020913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5315 + ... + 12972.

It is an arithmetic number, because the mean of its divisors is an integer number (10021824).

Almost surely, 270020923 is an apocalyptic number.

70020923 is a deficient number, since it is larger than the sum of its proper divisors (10153669).

70020923 is a wasteful number, since it uses less digits than its factorization.

70020923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18841.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 70020923 is about 8367.8505603291. The cubic root of 70020923 is about 412.1695876296.

The spelling of 70020923 in words is "seventy million, twenty thousand, nine hundred twenty-three".

Divisors: 1 7 547 3829 18287 128009 10002989 70020923