742770028 has 72 divisors (see below), whose sum is σ = 1776482064. Its totient is φ = 267120000.

The previous prime is 742769969. The next prime is 742770029. The reversal of 742770028 is 820077247.

It is not an unprimeable number, because it can be changed into a prime (742770029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14778 + ... + 41278.

It is an arithmetic number, because the mean of its divisors is an integer number (24673362).

Almost surely, 2^742770028 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 742770028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (888241032).

742770028 is an abundant number, since it is smaller than the sum of its proper divisors (1033712036).

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

742770028 is a wasteful number, since it uses less digits than its factorization.

742770028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26543 (or 26534 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 37.

The square root of 742770028 is about 27253.8075871978. The cubic root of 742770028 is about 905.6313687931.

The spelling of 742770028 in words is "seven hundred forty-two million, seven hundred seventy thousand, twenty-eight".