7272021534 has 16 divisors (see below), whose sum is σ = 14550283920. Its totient is φ = 2422967040.

The previous prime is 7272021529. The next prime is 7272021557. The reversal of 7272021534 is 4351202727.

It is a junction number, because it is equal to n+sod(n) for n = 7272021495 and 7272021504.

It is a congruent number.

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, 244819 + ... + 272910.

It is an arithmetic number, because the mean of its divisors is an integer number (909392745).

Almost surely, 2^7272021534 is an apocalyptic number.

7272021534 is an abundant number, since it is smaller than the sum of its proper divisors (7278262386).

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

7272021534 is a wasteful number, since it uses less digits than its factorization.

7272021534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520075.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 7272021534 is about 85276.1486817973. The cubic root of 7272021534 is about 1937.3959405452.

The spelling of 7272021534 in words is "seven billion, two hundred seventy-two million, twenty-one thousand, five hundred thirty-four".