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70387742 = 2192637043
BaseRepresentation
bin1000011001000…
…00100000011110
311220110001211102
410030200200132
5121004401432
610552353102
71513200035
oct414404036
9156401742
1070387742
1136806397
121b6a5792
1311776169
1494c371c
1562a5962
hex432081e

70387742 has 16 divisors (see below), whose sum is σ = 111576960. Its totient is φ = 33210072.

The previous prime is 70387739. The next prime is 70387747. The reversal of 70387742 is 24778307.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 70387696 and 70387705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70387747) 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, 6473 + ... + 13515.

It is an arithmetic number, because the mean of its divisors is an integer number (6973560).

Almost surely, 270387742 is an apocalyptic number.

70387742 is a deficient number, since it is larger than the sum of its proper divisors (41189218).

70387742 is a wasteful number, since it uses less digits than its factorization.

70387742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7327.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 70387742 is about 8389.7402820350. The cubic root of 70387742 is about 412.8880794702. Note that the first 3 decimals are identical.

The spelling of 70387742 in words is "seventy million, three hundred eighty-seven thousand, seven hundred forty-two".

Divisors: 1 2 19 38 263 526 4997 7043 9994 14086 133817 267634 1852309 3704618 35193871 70387742