72261534 has 8 divisors (see below), whose sum is σ = 144523080. Its totient is φ = 24087176.

The previous prime is 72261517. The next prime is 72261551. The reversal of 72261534 is 43516227.

It is an interprime number because it is at equal distance from previous prime (72261517) and next prime (72261551).

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

72261534 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6021789 + ... + 6021800.

It is an arithmetic number, because the mean of its divisors is an integer number (18065385).

Almost surely, 2^72261534 is an apocalyptic number.

72261534 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72261534 is a wasteful number, since it uses less digits than its factorization.

72261534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12043594.

The product of its digits is 10080, while the sum is 30.

The square root of 72261534 is about 8500.6784435126. The cubic root of 72261534 is about 416.5198713466.

The spelling of 72261534 in words is "seventy-two million, two hundred sixty-one thousand, five hundred thirty-four".