73247538 has 32 divisors (see below), whose sum is σ = 180302976. Its totient is φ = 19317888.

The previous prime is 73247521. The next prime is 73247557. The reversal of 73247538 is 83574237.

It is a super-2 number, since 2×73247538² = 10730403646122888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 73247496 and 73247505.

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, 66531 + ... + 67622.

It is an arithmetic number, because the mean of its divisors is an integer number (5634468).

Almost surely, 2^73247538 is an apocalyptic number.

73247538 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

73247538 is an abundant number, since it is smaller than the sum of its proper divisors (107055438).

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

73247538 is a wasteful number, since it uses less digits than its factorization.

73247538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134178.

The product of its digits is 141120, while the sum is 39.

The square root of 73247538 is about 8558.4775515275. The cubic root of 73247538 is about 418.4057817872.

The spelling of 73247538 in words is "seventy-three million, two hundred forty-seven thousand, five hundred thirty-eight".